Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '457bc85a93843fa935ef05a59c53474a11f2f07ac22330d1d431efea07006a6d' 
  AND token = 'l13IatlcJVyGt272j+qoRPj5/r3hNwxxf0rUY/ADQJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}