**$_productCollection = $block->getLoadedProductCollection();**
SELECT `e`.*,
   IF(at_status.value_id > 0, at_status.value, at_status_default.value) AS
   `status`,
   `cat_index`.`position`                                               AS
   `cat_index_position`
  FROM   `catalog_product_entity` AS `e`
   INNER JOIN `catalog_product_entity_int` AS `at_status_default`
           ON ( `at_status_default`.`entity_id` = `e`.`entity_id` )
              AND ( `at_status_default`.`attribute_id` = '87' )
              AND `at_status_default`.`store_id` = 0
   LEFT JOIN `catalog_product_entity_int` AS `at_status`
          ON ( `at_status`.`entity_id` = `e`.`entity_id` )
             AND ( `at_status`.`attribute_id` = '87' )
             AND ( `at_status`.`store_id` = 1 )
   INNER JOIN `catalog_category_product_index` AS `cat_index`
           ON cat_index.product_id = e.entity_id
              AND cat_index.store_id = 1
              AND cat_index.visibility IN( 3, 2, 4 )
              AND cat_index.category_id = '2'
 WHERE  ( IF(at_status.value_id > 0, at_status.value, at_status_default.value) IN
     ( 1 ) )
ORDER  BY `e`.`entity_id` DESC

**foreach ($_productCollection as $_product):**
SELECT `e`.*,
   IF(at_status.value_id > 0, at_status.value, at_status_default.value) AS
   `status`,
   `cat_index`.`position`                                               AS
   `cat_index_position`,
   `stock_status_index`.`stock_status`                                  AS
   `is_salable`
   FROM   `catalog_product_entity` AS `e`
   INNER JOIN `catalog_product_entity_int` AS `at_status_default`
           ON ( `at_status_default`.`entity_id` = `e`.`entity_id` )
              AND ( `at_status_default`.`attribute_id` = '87' )
              AND `at_status_default`.`store_id` = 0
   LEFT JOIN `catalog_product_entity_int` AS `at_status`
          ON ( `at_status`.`entity_id` = `e`.`entity_id` )
             AND ( `at_status`.`attribute_id` = '87' )
             AND ( `at_status`.`store_id` = 1 )
   INNER JOIN `catalog_category_product_index` AS `cat_index`
           ON cat_index.product_id = e.entity_id
              AND cat_index.store_id = 1
              AND cat_index.visibility IN( 3, 2, 4 )
              AND cat_index.category_id = '2'
   INNER JOIN `cataloginventory_stock_status` AS `stock_status_index`
           ON e.entity_id = stock_status_index.product_id
              AND stock_status_index.website_id = 0
              AND stock_status_index.stock_id = 1
      WHERE  ( IF(at_status.value_id > 0, at_status.value, at_status_default.value) IN
     ( 1 ) )
   AND ( stock_status_index.stock_status = 1 )
  ORDER  BY `e`.`entity_id` DESC