Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c491e86e65bd02c0cb2b331c82b6529e9e7f9cd88cc78fde8ad78c0f3818a2c3' 
  AND token = 'sx129RZGjKcc0BURq/pi+P7YjSWIwR5jn4LXP/4sOXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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