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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 (
    82, 10, 9, 142, 59, 60, 62, 141, 27, 22, 
    23, 14, 13, 17, 18, 16, 56, 126, 51295, 
    117, 116, 115, 81, 11, 63, 51326, 135, 
    106, 105, 58, 57, 113, 51344, 120, 51345, 
    119, 51346, 118, 114, 108, 4, 5, 107, 
    6, 51348, 121, 51349, 122, 61, 51350, 
    123, 15, 51496, 51497, 51498
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00043

JSON explain

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