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 (
    28, 18317, 15002, 15000, 15001, 15003, 
    15004, 15005, 15006, 15007, 15008, 
    15009, 15010, 15011, 15012, 15013, 
    15014, 15015, 15016, 15017, 15018, 
    15019, 15020, 15021, 15022, 15023, 
    15024, 15025, 15026, 15027, 15028, 
    15029, 15030, 15031, 15032, 15033, 
    15034, 15035, 15036, 15037, 15038, 
    15039, 15040, 15041, 15042, 15043, 
    15044, 15045, 15046, 15047, 15048, 
    15049, 15050, 15051, 15052, 15053, 
    15054, 15055, 15056, 15057, 15058, 
    15059, 15060, 15061, 15062, 15063, 
    15064, 15065, 15066, 15067, 15068, 
    15069, 15070, 15071, 15072, 15073, 
    15074, 15075, 15076, 15077, 15078, 
    15079, 15080, 15081, 15082, 15083, 
    15084, 15085, 15086, 15087, 15088, 
    15089, 15090, 15091, 15092, 15093, 
    15094, 15095, 15096, 15097, 15098, 
    15099, 15100, 15101, 15102, 15103, 
    15104, 15105, 15106, 15107, 15108, 
    15109, 15110, 15111, 15112, 15113, 
    15114, 15115
  ) 
  AND companies.status IN ('A') 
  AND products.company_id IN (2, 64, 92, 103, 104, 121, 127, 0) 
  AND products.company_id = 2 
  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.company_id = 2 
  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 0.00005

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": "companies",
              "access_type": "const",
              "possible_keys": ["PRIMARY"],
              "key": "PRIMARY",
              "key_length": "4",
              "used_key_parts": ["company_id"],
              "ref": ["const"],
              "rows": 1,
              "filtered": 100
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "ALL",
              "possible_keys": ["PRIMARY", "status", "idx_parent_product_id"],
              "rows": 67,
              "filtered": 79.83960724,
              "attached_condition": "products.company_id = 2 and 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": "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 (28,18317,15002,15000,15001,15003,15004,15005,15006,15007,15008,15009,15010,15011,15012,15013,15014,15015,15016,15017,15018,15019,15020,15021,15022,15023,15024,15025,15026,15027,15028,15029,15030,15031,15032,15033,15034,15035,15036,15037,15038,15039,15040,15041,15042,15043,15044,15045,15046,15047,15048,15049,15050,15051,15052,15053,15054,15055,15056,15057,15058,15059,15060,15061,15062,15063,15064,15065,15066,15067,15068,15069,15070,15071,15072,15073,15074,15075,15076,15077,15078,15079,15080,15081,15082,15083,15084,15085,15086,15087,15088,15089,15090,15091,15092,15093,15094,15095,15096,15097,15098,15099,15100,15101,15102,15103,15104,15105,15106,15107,15108,15109,15110,15111,15112,15113,15114,15115)",
              "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)"
            }
          }
        ]
      }
    }
  }
}