from datetime import datetime


def check_expiration(expiry_date: bytes) -> bool:
    """Check if the MRZ expiry date is older than today's date."""
    date = expiry_date.decode("utf-8")
    date_obj = datetime.strptime(date, "%y%m%d")
    if date_obj.date() < datetime.now().date():
        return False
    return True