SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    15744, 15745, 15746, 15743, 15738, 15739, 
    15740, 15741, 15742, 15736, 15737, 
    10455, 10456, 10454, 10453, 10452, 
    10451, 10450, 10449, 10448, 10447, 
    12691, 12692, 12693, 12694, 12695, 
    12696, 12697, 12698, 12699, 10206, 
    10209, 10216, 10203, 10204, 10205, 
    10207, 10208, 10210, 10211, 10212, 
    10213, 10214, 10215, 10217, 10218, 
    10219, 10220, 10221, 10222
  )

Query time 0.00288

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": 50,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (15744,15745,15746,15743,15738,15739,15740,15741,15742,15736,15737,10455,10456,10454,10453,10452,10451,10450,10449,10448,10447,12691,12692,12693,12694,12695,12696,12697,12698,12699,10206,10209,10216,10203,10204,10205,10207,10208,10210,10211,10212,10213,10214,10215,10217,10218,10219,10220,10221,10222)"
    }
  }
}