UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'XrjndFt89Ep241BYcHKnBqzIb4IYwSydCXAPAIlBBKU=' 
WHERE 
  key_id = '68cdf75389ebf91f3845d4840e052c25e7395a2cc836285e86a0de33686c3720' 
  AND (
    token = 'XrjndFt89Ep241BYcHKnBqzIb4IYwSydCXAPAIlBBKU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )