code: async def expire(self, key, ttl, namespace=None, _conn=None):
          
          start = time.monotonic()
          ns_key = self.build_key(key, namespace=namespace)
          ret = await self._expire(ns_key, ttl, _conn=_conn)
          logger.debug("EXPIRE %s %d (%.4f)s", ns_key, ret, time.monotonic() - start)
          return ret
docs: Set the ttl to the given key. By setting it to 0, it will disable it
  
          :param key: str key to expire
          :param ttl: int number of seconds for expiration. If 0, ttl is disabled
          :param namespace: str alternative namespace to use
          :param timeout: int or float in seconds specifying maximum timeout
              for the operations to last
          :returns: True if set, False if key is not found
          :raises: :class:`asyncio.TimeoutError` if it lasts more than self.timeout