SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    3519, 6198, 48069, 2669, 854, 44767, 
    45446, 4117, 31965, 26892, 37317, 4119, 
    41284, 4118, 35740, 6651, 4120, 1519, 
    36762, 26895, 45357, 23050, 26894, 
    26891, 26887, 23044, 23017, 26889, 
    26898, 26897, 23047, 26876
  )

Query time 0.00217

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 (3519,6198,48069,2669,854,44767,45446,4117,31965,26892,37317,4119,41284,4118,35740,6651,4120,1519,36762,26895,45357,23050,26894,26891,26887,23044,23017,26889,26898,26897,23047,26876)"
        }
      }
    ]
  }
}