SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    17679, 17772, 17773, 17774, 17775, 17776, 
    17777, 17778, 17779, 17780, 17781, 
    17782, 17783, 13091, 12551, 15800, 
    12593, 12588, 15938, 13152
  )

Query time 0.00123

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 20,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (17679,17772,17773,17774,17775,17776,17777,17778,17779,17780,17781,17782,17783,13091,12551,15800,12593,12588,15938,13152)"
    }
  }
}