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SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (
    128, 51118, 51117, 51116, 51115, 51114, 
    51113, 49, 51132, 51131, 51134, 51133, 
    51130, 41, 51155, 51154, 51153, 51152, 
    21, 51169, 51168, 51167, 51166, 90, 
    51171, 51170, 51183, 20, 51188, 51187, 
    51186, 51185, 51184, 51243, 51242, 
    51241, 51240, 51239, 36, 51294, 51293, 
    51291, 51290, 94, 18, 81, 51318, 51317, 
    51316, 51, 51319, 106, 58, 86, 15, 95, 
    51356, 51355, 44, 31, 51366, 51367, 
    51368, 51369
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}