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 (3522, 3521, 3523) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00019

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": 3,
      "filtered": 100,
      "index_condition": "cscart_product_descriptions.product_id in (3522,3521,3523)",
      "attached_condition": "cscart_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
3521 <p> <span style="color: rgb(85, 85, 85); font-family: Helvetica, Arial, sans-serif; font-size: 13px; line-height: 20px; background-color: rgb(255, 255, 255);">Racing Radios two-way headset is used in every form of racing around the globe. Features include: 150 ohm noise canceling dynamic microphone, foam ear seal, comfortable behind the head fit, 32 ohm speakers, 23db NRR, PTT button on right cup, universal 5 pin connector for cable to radio. This two-way headset also features built in scanner port on left earcup to plug in existing scanner for 2nd audio feed. (Headset cable for radio not included).</span></p> Dual Muff Headset, racing style headset
3522 <p> <span style="color: rgb(85, 85, 85); font-family: Helvetica, Arial, sans-serif; font-size: 13px; line-height: 20px; background-color: rgb(255, 255, 255);">Racing Radios two-way headset is used in every form of racing around the globe. Features include: 150 ohm noise canceling dynamic microphone, foam ear seal, comfortable behind the head fit, 32 ohm speakers, 23db NRR, PTT button on right cup, universal 5 pin connector for cable to radio. This two-way headset also features built in scanner port on left earcup to plug in existing scanner for 2nd audio feed. (Headset cable for radio not included).</span> </p> dual muff headset, racing radios,
3523 <p style="margin-bottom: 8px; color: rgb(85, 85, 85); font-family: Helvetica, Arial, sans-serif; font-size: 13px; line-height: 20px; background-color: rgb(255, 255, 255);"> The Racing Radios dual radio headset enables you to utilize one headset to communicate on two radios. SPECS: 150 ohm dynamic noise-canceling microphone, 32 ohm speakers, 23db NRR, PTT on right cup, universal 5 pin connector for cable to radio.<br> (Requires two headset cables). </p><p style="margin-bottom: 8px; color: rgb(85, 85, 85); font-family: Helvetica, Arial, sans-serif; font-size: 13px; line-height: 20px; background-color: rgb(255, 255, 255);"> *Don't forget to add your headset cables to your order.</p>