SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '', 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (3983, 3984, 3981, 3985, 3982, 6893) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id"],
      "key": "product_id",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 6,
      "filtered": 100,
      "index_condition": "cscart_product_descriptions.product_id in (3983,3984,3981,3985,3982,6893)",
      "attached_condition": "cscart_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
3981 <p>Colored bands easily slip on antennas and enable you to quickly visually identify custom radio user groups. Each ID band kit is sold in packs of 10. </p> SL300 Antenna, XPR3300 Antenna, XPR7580 Antenna, XPR7380 Antenna, XPR7350 Antenna, XPR3500 Antennas, TLK100, TLK 100
3982 <p>Colored bands easily slip on antennas and enable you to quickly visually identify custom radio user groups. Each ID band kit is sold in packs of 10. </p> SL300 Antenna, XPR3500 Antenna, XPR7580 Antenna, XPR7380 Antenna, XPR7350 Antenna, XPR3300 Antennas, TLK100, TLK 100
3983 <p>Colored bands easily slip on antennas and enable you to quickly visually identify custom radio user groups. Each ID band kit is sold in packs of 10. </p> SL300 Antenna, XPR3300 Antenna, XPR3500 Antenna, XPR7350 Antenna, XPR7380 Antenna, XPR7580 Antennas, TLK100, TLK 100
3984 <p>Colored bands easily slip on antennas and enable you to quickly visually identify custom radio user groups. Each ID band kit is sold in packs of 10. </p> SL300 Antenna, XPR3300 Antenna, XPR3500 Antenna, XPR7350 Antenna, XPR7380 Antenna, XPR7580 Antennas, TLK100, TLK 100
3985 <p>Colored bands easily slip on antennas and enable you to quickly visually identify custom radio user groups. Each ID band kit is sold in packs of 10. </p> SL300 Antenna, XPR3300 Antenna, XPR3500 Antenna, XPR7350 Antenna, XPR7380 Antenna, XPR7580 Antennas, TLK100, TLK 100
6893 <p>TLK110 Replacement LTE Antenna (North America)</p> TLK 110, TLK110 antenna, TLK 110 antenna, TLK110 LTE antenna, TLK 110 LTE antenna