SELECT 
  cscart_product_descriptions.product_id, 
  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 (325, 264, 266, 279, 316) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "lang_code"],
      "rows": 5,
      "filtered": 100,
      "index_condition": "cscart_product_descriptions.product_id in (325,264,266,279,316) and cscart_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id meta_keywords meta_description search_words promo_text
264 Camera,head, ballhead, tripod, gitzo, Arca Swiss, RRS, KIRK, Wimberley, foba Fine Art Quality, Professional Ball Head Markins Q20i-RD Knob Shoe
266 Camera,head, ballhead, tripod, gitzo, Arca Swiss, RRS, KIRK, Wimberley, foba Fine Art Quality, Professional Ball Head Markins Q20iQ-RD Lever Shoe
279
316 Camera, Tripod, Head, Quick, Shoe, Clamp, Plate, Bracket, Arca-Swiss, rrs, kirk, foba For Sony α7II α7RII. Optional LS-A72 for PS-A72 to convert it to L-Plate（L-Bracket）
325 Camera, Lens, Tripod, Head, Quick, Shoe, Clamp, Plate, Foot, Arca-Swiss, rrs, kirk, foba Markins PL-55 is a 2.4in (60mm) long anti-twist flange style lens plate.