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 (
    7751, 7748, 7753, 7739, 7740, 7746, 7749, 
    7742, 7750, 7745, 7747, 7752, 7741, 
    7743, 7754, 7744
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_ult_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id", "company_id"],
      "key": "product_id",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 16,
      "filtered": 100,
      "index_condition": "cscart_ult_product_descriptions.product_id in (7751,7748,7753,7739,7740,7746,7749,7742,7750,7745,7747,7752,7741,7743,7754,7744)",
      "attached_condition": "cscart_ult_product_descriptions.company_id = 1 and cscart_ult_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
7739 Power Monitor INTERNET
7740 Power Monitor UHF W/PNL 1
7741 Power Monitor UHF W/PNL 1
7742 Power Monitor VHF W/PNL 1
7743 Power Monitor UHF W/PNL 2
7744 Power Monitor UHF W/PNL 2
7745 Power Monitor VHF W/PNL 2
7746 Power Monitor UHF W/PNL 3
7747 Power Monitor UHF W/PNL 3
7748 Power Monitor VHF W/PNL 3
7749 Power Monitor UHF W/PNL 4
7750 Power Monitor VHF W/PNL 4
7751 Power Monitor HUHF
7752 Power Monitor UHF
7753 Power Monitor VHF
7754 Power Monitor VHF