Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b052a707dd04bc7c7fae1b73c86327407902cf0cb1138ef1236f2c0f7cd52508' 
  AND token = 'dJyYr9bwm4xFKlD5vZszFLoq9XnDJSvM5OaJ+znoh7k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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