Lock checking.

        Check if there is lock pending and check if enough time
        passed so requests can be unlocked.

def __checkLock(self):
        """
        Lock checking.

        Check if there is lock pending and check if enough time
        passed so requests can be unlocked.
        """
        if self._isLocked:
            if (time.time() - self._timer) > TIMEOUT_TIMES[self._operation]:
                self.__unLock()
                return False
            return True
        return False