Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd0e4e1f944a8f175655ddeb67ffdc9a42059db78479d6666642626f28a48049' 
  AND token = 'wFl5ZoONL+lflVDlGEiCGZX13JrehXrnkni11qa94IU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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