Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '433371500d48d9410872204a6997fbaebafa15b363448ede007f7b679863b343' 
  AND token = 'QPOPsxpOTfH4j+EjJRBi3b6PD0ik+te4KEeaSHY+ECg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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