SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    48839, 40437, 1896, 50216, 40451, 33725, 
    27361, 630, 2320, 49588, 2319, 50194, 
    35256, 47632, 45283, 43652, 49487, 
    1893, 46822, 47593, 49251, 6659, 49169, 
    50182, 47613, 48823, 38074, 46585, 
    6091, 15457, 40927, 1773
  )

Query time 0.00461

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 (48839,40437,1896,50216,40451,33725,27361,630,2320,49588,2319,50194,35256,47632,45283,43652,49487,1893,46822,47593,49251,6659,49169,50182,47613,48823,38074,46585,6091,15457,40927,1773)"
        }
      }
    ]
  }
}