SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    78, 79, 11, 41, 81, 107, 109, 91, 92, 34, 
    15, 31, 38, 80, 102, 28, 280, 282, 2509, 
    2503, 2497, 2506, 278, 2500, 3457, 7, 
    27
  )

Query time 0.00068

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.04773845,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 27,
          "cost": 0.04773845,
          "filtered": 100,
          "attached_condition": "cscart_products.product_id in (78,79,11,41,81,107,109,91,92,34,15,31,38,80,102,28,280,282,2509,2503,2497,2506,278,2500,3457,7,27)"
        }
      }
    ]
  }
}