Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f09a4850ef41352a5746a1af331af75352e3e7b21d3ccc8c9c547e97b7e12f2f' 
  AND token = 'RO36k8Bp749PUMxpm9Grx+2HgK0yAhcLEnuue2ty0tk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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