Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '011601f9c7f9eb407be3476fc4ffd2805ed01a9aa9fbf942a8e520e1288d6511' 
  AND token = '88BnLUK+jJfJS09tOw9Kp+28p09VxPY0wHIUxoTaYEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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