SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_warehouses_sum_products_amount as war_sum_amount ON war_sum_amount.product_id = products.product_id 
  LEFT JOIN cscart_warehouses_destination_products_amount AS warehouses_destination_products_amount ON warehouses_destination_products_amount.product_id = products.product_id 
  AND warehouses_destination_products_amount.destination_id = 0 
  AND warehouses_destination_products_amount.storefront_id = 0 
WHERE 
  1 
  AND cscart_categories.category_id IN (
    20196, 
    20197, 
    20198, 
    20199, 
    20200, 
    20201, 
    20202, 
    20203, 
    20204, 
    20205, 
    20206, 
    20207, 
    20208, 
    20209, 
    20210, 
    20211, 
    20212, 
    20213, 
    20214, 
    20215, 
    20216, 
    20217, 
    20218, 
    20219, 
    20220, 
    20221, 
    20222, 
    20223, 
    20224, 
    20225, 
    20226, 
    20227, 
    20228, 
    20229, 
    20230, 
    20231, 
    20232, 
    20233, 
    20234, 
    20235, 
    20236, 
    20237, 
    20238, 
    20239, 
    20240, 
    20241, 
    20242, 
    20243, 
    20244, 
    20245, 
    20246, 
    20247, 
    20248, 
    20249, 
    20250, 
    20251, 
    20252, 
    20253, 
    20254, 
    20255, 
    20256, 
    20257, 
    20258, 
    20259, 
    20260, 
    20261, 
    20262, 
    20263, 
    20264, 
    20265, 
    20266, 
    20267, 
    20268, 
    20269, 
    20270, 
    20271, 
    20272, 
    20273, 
    20274, 
    20275, 
    20276, 
    20277, 
    20278, 
    20279, 
    20280, 
    20281, 
    20282, 
    20283, 
    20284, 
    20285, 
    20286, 
    20287, 
    20288, 
    20289, 
    20290, 
    20291, 
    20292, 
    20293, 
    20294, 
    20295, 
    20296, 
    20297, 
    20298, 
    20299, 
    20300, 
    20301, 
    20302, 
    20303, 
    20304, 
    20305, 
    20306, 
    20307, 
    20308, 
    20309, 
    20310, 
    20311, 
    20312, 
    20313, 
    20314, 
    20315, 
    20316, 
    20317, 
    20318, 
    20319, 
    20320, 
    20321, 
    20322, 
    20323, 
    20324, 
    20325, 
    20326, 
    20327
  ) 
  AND companies.status IN ('A') 
  AND products.company_id IN (2, 64, 92, 103, 104, 121, 127, 0) 
  AND (
    CASE products.is_stock_split_by_warehouses WHEN 'Y' THEN warehouses_destination_products_amount.amount ELSE products.amount END
  ) > 0 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
  AND products.product_type != 'D' 
GROUP BY 
  products.product_id 
ORDER BY 
  products.timestamp desc, 
  products.product_id ASC 
LIMIT 
  0, 20

Query time 0.00008

JSON explain

{
  "query_block": {
    "select_id": 1,
    "filesort": {
      "sort_key": "products.`timestamp` desc, products.product_id",
      "temporary_table": {
        "nested_loop": [
          {
            "table": {
              "table_name": "war_sum_amount",
              "access_type": "system",
              "possible_keys": ["PRIMARY"],
              "rows": 0,
              "filtered": 0,
              "const_row_not_found": true
            }
          },
          {
            "table": {
              "table_name": "warehouses_destination_products_amount",
              "access_type": "system",
              "possible_keys": ["PRIMARY", "idx_storefront_id"],
              "rows": 0,
              "filtered": 0,
              "const_row_not_found": true
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "ALL",
              "possible_keys": ["PRIMARY", "status", "idx_parent_product_id"],
              "rows": 67,
              "filtered": 79.83960724,
              "attached_condition": "products.parent_product_id = 0 and products.company_id in (2,64,92,103,104,121,127,0) and case products.is_stock_split_by_warehouses when 'Y' then NULL else products.amount end > 0 and (products.usergroup_ids = '' or find_in_set(0,products.usergroup_ids) or find_in_set(1,products.usergroup_ids)) and products.`status` = 'A' and products.product_type <> 'D'"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY", "product_id"],
              "key": "PRIMARY",
              "key_length": "9",
              "used_key_parts": ["product_id", "lang_code"],
              "ref": ["ebonza_cscart_test.products.product_id", "const"],
              "rows": 1,
              "filtered": 100,
              "attached_condition": "trigcond(descr1.lang_code = 'en')"
            }
          },
          {
            "table": {
              "table_name": "companies",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY"],
              "key": "PRIMARY",
              "key_length": "4",
              "used_key_parts": ["company_id"],
              "ref": ["ebonza_cscart_test.products.company_id"],
              "rows": 1,
              "filtered": 100,
              "attached_condition": "companies.`status` = 'A'"
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "usergroup",
              "key_length": "3",
              "used_key_parts": ["product_id"],
              "ref": ["ebonza_cscart_test.products.product_id"],
              "rows": 1,
              "filtered": 90.5405426,
              "attached_condition": "prices.lower_limit = 1 and prices.usergroup_id in (0,0,1)",
              "using_index": true
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "ref",
              "possible_keys": ["PRIMARY", "pt"],
              "key": "pt",
              "key_length": "3",
              "used_key_parts": ["product_id"],
              "ref": ["ebonza_cscart_test.products.product_id"],
              "rows": 1,
              "filtered": 100
            }
          },
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY", "c_status", "p_category_id"],
              "key": "PRIMARY",
              "key_length": "3",
              "used_key_parts": ["category_id"],
              "ref": ["ebonza_cscart_test.products_categories.category_id"],
              "rows": 1,
              "filtered": 100,
              "index_condition": "cscart_categories.category_id in (20196,20197,20198,20199,20200,20201,20202,20203,20204,20205,20206,20207,20208,20209,20210,20211,20212,20213,20214,20215,20216,20217,20218,20219,20220,20221,20222,20223,20224,20225,20226,20227,20228,20229,20230,20231,20232,20233,20234,20235,20236,20237,20238,20239,20240,20241,20242,20243,20244,20245,20246,20247,20248,20249,20250,20251,20252,20253,20254,20255,20256,20257,20258,20259,20260,20261,20262,20263,20264,20265,20266,20267,20268,20269,20270,20271,20272,20273,20274,20275,20276,20277,20278,20279,20280,20281,20282,20283,20284,20285,20286,20287,20288,20289,20290,20291,20292,20293,20294,20295,20296,20297,20298,20299,20300,20301,20302,20303,20304,20305,20306,20307,20308,20309,20310,20311,20312,20313,20314,20315,20316,20317,20318,20319,20320,20321,20322,20323,20324,20325,20326,20327)",
              "attached_condition": "(cscart_categories.usergroup_ids = '' or find_in_set(0,cscart_categories.usergroup_ids) or find_in_set(1,cscart_categories.usergroup_ids)) and cscart_categories.`status` in ('A','H') and cscart_categories.storefront_id in (0,1)"
            }
          }
        ]
      }
    }
  }
}