Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '342e4a43b864ee4103e4630cc7bd371cdc9fca0958f5af8f87cc849291920b64' 
  AND token = '8JlRLCcC7O4i9VEIa9AWDKAU1lOTDBXvHPxPvdIJ5+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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