code: public function expireAt($timestamp, bool $milliseconds = false): bool
      {
          if ($milliseconds) {
              $return = $this->redis->pexpireat($this->key, $timestamp);
          } else {
              $return = $this->redis->expireAt($this->key, $timestamp);
          }
  
          return $return === self::RESPONSE_SUCCESS;
      }
docs: @param int  $timestamp    Timestamp in seconds or milliseconds since Unix epoch.
  
  @param bool $milliseconds If set to true, $timestamp is interpreted as milliseconds timestamp.
  
  @return bool True on success. False otherwise.