SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    5648, 364, 31622, 29949, 3505, 33291, 
    360, 1542, 5650, 37942, 31618, 1135, 
    3700, 35230, 27260, 37943, 931, 37946, 
    5805, 329, 35228, 31683, 327, 363, 613, 
    2795, 4356, 4355, 35229, 18466, 46587, 
    932
  )

Query time 0.00147

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rows": 32,
          "filtered": 100,
          "index_condition": "cscart_products.product_id in (5648,364,31622,29949,3505,33291,360,1542,5650,37942,31618,1135,3700,35230,27260,37943,931,37946,5805,329,35228,31683,327,363,613,2795,4356,4355,35229,18466,46587,932)"
        }
      }
    ]
  }
}