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 (
    5541, 5548, 5537, 5535, 5534, 5547, 5543, 
    5545, 5536, 5539, 5542, 5538, 5549, 
    5546, 5540, 5544, 6788, 6725, 6726, 
    6785, 6786, 6789, 6787
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00038

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": "PRIMARY",
      "key_length": "13",
      "used_key_parts": ["product_id", "lang_code", "company_id"],
      "rows": 23,
      "filtered": 100,
      "index_condition": "cscart_ult_product_descriptions.company_id = 1 and cscart_ult_product_descriptions.product_id in (5541,5548,5537,5535,5534,5547,5543,5545,5536,5539,5542,5538,5549,5546,5540,5544,6788,6725,6726,6785,6786,6789,6787) and cscart_ult_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
5534 P8-R1JK1-C5-001 - 450-470 MHz .100-.200 In, 80 Out, 13.8V 24A Amplifier
5535 P8-R2JK1-C5-001 - 764-870 MHz .200-.500 In, 80 Out, 13.8V 24A Amplifier
5536 P8-R5JK1-C5-001 - 764-870 MHz .500-1 In, 80 Out, 13.8V 24A Amplifier
5537 P8-1JK1-C5-001 - 764-870 MHz 1-2 In, 80 Out, 13.8V 24A Amplifier
5538 P8-2JK1-C5-001 - 764-870 MHz 2-5 In, 80 Out, 13.8V 24A Amplifier
5539 P8-5JK1-C5-001 - 764-870 MHz 5-10 In, 80 Out, 13.8V 24A Amplifier
5540 P8-10JK1-C5-001 - 764-870 MHz 10-20 In, 80 Out, 13.8V 24A Amplifier
5541 P8-20JK1-C5-001 - 764-870 MHz 20-50 In, 80 Out, 13.8V 24A Amplifier
5542 P15-R1JK1-C6-001 - 764-870 MHz .100-.200 In, 150 Out, 13.8V 44A Amplifier
5543 P15-R2JK1-C6-001 - 764-870 MHz .200-.500 In, 150 Out, 13.8V 44A Amplifier
5544 P15-R5JK1-C6-001 - 764-870 MHz .500-1 In, 150 Out, 13.8V 44A Amplifier
5545 P15-1JK1-C6-001 - 764-870 MHz 1-2 In, 150 Out, 13.8V 44A Amplifier
5546 P15-2JK1-C6-001 - 764-870 MHz 2-5 In, 150 Out, 13.8V 44A Amplifier
5547 P15-5JK1-C6-001 - 764-870 MHz 5-10 In, 150 Out, 13.8V 44A Amplifier
5548 P15-10JK1-C6-001 - 764-870 MHz 10-20 In, 150 Out, 13.8V 44A Amplifier
5549 P15-20JK1-C6-001 - 764-870 MHz 20-50 In, 150 Out, 13.8V 44A Amplifier
6725
6726
6785
6786
6787
6788
6789