Sandbox

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 (
    10793, 10794, 10795, 10796, 10797, 10798, 
    10799, 10800, 10801, 10802, 10803, 
    10804, 10805, 10806, 10807, 10808, 
    10809, 10810, 10811, 10812, 10827, 
    10828, 9686, 10767, 10768, 10769, 10770, 
    10771, 10772, 10773, 10774, 10775, 
    10776, 10777, 9689, 10459, 10460, 10461, 
    10462, 10463, 10464, 10465, 10625, 
    10626, 10627, 10628, 10629, 10630, 
    10631, 10632, 10633, 10634, 10635, 
    10636, 12944, 10829, 10830, 10831, 
    10832, 10833, 10834, 10835, 10836, 
    10837
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}