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 (7885) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "const",
      "possible_keys": ["PRIMARY", "product_id"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "lang_code"],
      "ref": ["const", "const"],
      "rows": 1,
      "filtered": 100
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
7885 <p>BTH-300-MAX Wireless microphone kits for Phone & Tablet Apps. Available in 9 different versions based on the mobile app used. Includes built-in wireless PTT. Includes charger and charging cable.</p><ul><li>10+ hours of operational battery life (&gt;50 hours of standby)</li><li>Built-in wireless PTT with front mounted button.</li><li>Slim, lightweight case is comfortable to wear and easy to use.</li><li>Top-mounted 3.5mm jack is compatible with Apple headsets or multiple Pryme headsets.</li><li>Typical operation range: 10 meters</li><li>Side-mounted volume controls remember their setting even when unit is powered-off.</li><li>Cell phone control button for typical phone functions such as answering or terminating phone calls.</li><li>360 metal, swivel, clothing clip allows user to wear comfortably.</li><li>Wall charger and micro USB charging cable included in all versions <br>(charging cable can also be used with most USB style charging adapters including car chargers.)</li></ul> BTH-LMIC, BTH300, Bluetooth lapel mic, Bluetooth mic, Bluetooth RSM