Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2dea735a5bc959b65db4b1b72854fee92c6d66833d727dda978b6090c89820ef' 
  AND token = 'fwqncfupE692QNGXzsyisQX9cnd3hY0BLIPf+lqxeU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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