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 (
    22939, 22940, 22941, 22942, 22943, 22944, 
    22945, 22946, 22947, 22948, 22949, 
    22950, 22951, 22952, 22953, 22954, 
    22955, 22956, 22957, 22958, 22959, 
    22960, 22961, 22962, 22963, 22964, 
    22965, 22966, 22967, 22968, 22969, 
    22970, 22971, 22972, 22973, 22974, 
    22975, 22976, 22977, 22978, 22979, 
    22980, 22981, 22982, 22983, 22984, 
    22985, 22986, 22987, 22988, 22989, 
    22990, 22991, 22992, 22993, 22994, 
    22995, 22996, 22997, 22998, 22999, 
    23000, 23001, 23002, 23003, 23004, 
    23005, 23006, 23007, 23008, 23009, 
    23010, 23011, 23012, 23013, 23014, 
    23015, 23016, 23017, 23018, 23019, 
    23020, 23021
  ) 
  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 0.00006

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 (22939,22940,22941,22942,22943,22944,22945,22946,22947,22948,22949,22950,22951,22952,22953,22954,22955,22956,22957,22958,22959,22960,22961,22962,22963,22964,22965,22966,22967,22968,22969,22970,22971,22972,22973,22974,22975,22976,22977,22978,22979,22980,22981,22982,22983,22984,22985,22986,22987,22988,22989,22990,22991,22992,22993,22994,22995,22996,22997,22998,22999,23000,23001,23002,23003,23004,23005,23006,23007,23008,23009,23010,23011,23012,23013,23014,23015,23016,23017,23018,23019,23020,23021)",
              "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)"
            }
          }
        ]
      }
    }
  }
}