lib/Middleware/Cookie/Cookie.php
public function isExpired(): bool
    {
        $maxAge = $this->getAttribute(static::ATTR_MAX_AGE);
        if ($maxAge && time() - $this->getCreatedAt() > $maxAge) {
            return true;
        }

        $expires = $this->getAttribute(static::ATTR_EXPIRES);
        if ($expires && strtotime($expires) < time()) {
            return true;
        }

        return false;
    }
public function isExpired(): bool
    {
        $maxAge = $this->getAttribute(static::ATTR_MAX_AGE);
        if ($maxAge && time() - $this->getCreatedAt() > $maxAge) {
            return true;
        }

        $expires = $this->getAttribute(static::ATTR_EXPIRES);
        if ($expires && strtotime($expires) < time()) {
            return true;
        }

        return false;
    }
Returns true of the current cookie has expired.

Checks the max-age and expires attributes.

@return bool Whether the current cookie has expired