Magento 2 - Test if Static Block is Enabled in custom template

If you use

$block->getLayout()
->createBlock('Magento\Cms\Block\Block')->setBlockId(BLOCK_ID)->toHtml();

Then there are not need to check block is active or not because of Magento\Cms\Block\Block's _toHtml() function return content whenever the block is active[ by checking if ($block->isActive()) {]

---

Check _toHtml() function of that class:

protected function _toHtml()
    {
       ...
        $html = '';
        if ($blockId) {
             ....
            /** @var \Magento\Cms\Model\Block $block */
            $block = $this->_blockFactory->create();
            ......
            if ($block->isActive()) {
                $html = $this->_filterProvider->getBlockFilter()->setStoreId($storeId)->filter($block->getContent());
            }
        }
        return $html;
    }

---

For logical reference,you can use below

$html=$block->getLayout()->createBlock(
                'Magento\Cms\Block\Block'
            )->setBlockId(10)->toHtml();

// check it have content
if($html!=''):
 echo $html
endif;

You can do it using below code for any custom template,

    $obj = \Magento\Framework\App\ObjectManager::getInstance();
    $blocks = $obj->get('Magento\Cms\Model\Block')->load(7);

    if($blocks->getIsActive()){
       //code
    }