Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58b5af74eb13eb67a4c66cde13610d09ce3604075287624701624d010287a954' 
  AND token = 'IuOjgnnlNQQU89T06k5dTvg9F30SpN7wqZI+a0YuvSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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