UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'r8r7eYAHVgtZMgx3pfIorjlLec8vrfQjHruO9d5eJ08=' 
WHERE 
  key_id = '76eebdb43c9d37c8106de370332d8853ff327a475635b0b536d69da62e4fd178' 
  AND (
    token = 'r8r7eYAHVgtZMgx3pfIorjlLec8vrfQjHruO9d5eJ08=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )