自动冲销解冻的触发器的并发问题

` timer.schedule(new TimerTask() {
public void run() {
synchronized (payment.getPayId().intern()) {
// 使用2分钟之前的Payment到数据库中查出当前的Payment
Payment currentPayment = paymentRepository.findById(payment.getId()).orElseThrow(() -> new EntityNotFoundException(payment.getId().toString()));
if (currentPayment.getPayState() == Payment.State.WAITING) {
log.info("支付单{}当前状态为：WAITING，转变为：TIMEOUT", payment.getId());
accomplishSettlement(Payment.State.TIMEOUT, payment.getPayId());
}
}
}
}, payment.getExpires());
`

1.先findById，2.再判断状态，3，再执行accomplishSettlement
如果产生并发可能产生在accomplishSettlement之前payment已经被支付了，是否可能产生业务问题。