Slow load time due to certain PHP processes?

Hello,

I have already had slow loading times twice today due to almost 100% CPU utilization according to phpMyAdmin.

After a PHP reset, the load went back down to the normal level of approx. 20 to 40%.

Previously phpMyAdmin showed me processes like this, that seem to be connected to Booster for WooCommerce (because of the mentioned „wcj“):

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts INNER JOIN wp_postmeta AS wcj_sku ON (wp_posts.ID = wcj_sku.post_id) WHERE 1=1 AND ( wp_posts.ID NOT IN ( SELECT object_id FROM wp_term_relationships WHERE term_taxonomy_id IN (7) ) AND wp_posts.ID NOT IN ( SELECT object_id FROM wp_term_relationships WHERE term_taxonomy_id IN (8) ) ) AND (((wp_posts.post_title LIKE '%ekg%') OR (wcj_sku.meta_key = '_sku' AND CAST(wcj_sku.meta_value AS CHAR) LIKE '%ekg%') OR (wp_posts.post_excerpt LIKE '%ekg%') OR (wp_posts.post_content LIKE '%ekg%')) AND ((wp_posts.post_title LIKE '%gerät%') OR (wcj_sku.meta_key = '_sku' AND CAST(wcj_sku.meta_value AS CHAR) LIKE '%gerät%') OR (wp_posts.post_excerpt LIKE '%gerät%') OR (wp_posts.post_content LIKE '%gerät%')) AND ((wp_posts.post_title LIKE '%zuhause%') OR (wcj_sku.meta_key = '_sku' AND CAST(wcj_sku.meta_value AS CHAR) LIKE '%zuhause%') OR (wp_posts.post_excerpt LIKE '%zuhause%') OR (wp_posts.post_content LIKE '%zuhause%'))) AND (wp_posts.post_password = '') AND ((wp_posts.post_type = 'product' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'acf-disabled'))) GROUP BY wp_posts.ID ORDER BY wp_posts.menu_order ASC, wp_posts.post_title ASC LIMIT 0, 1

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts INNER JOIN wp_postmeta AS wcj_sku ON (wp_posts.ID = wcj_sku.post_id) WHERE 1=1 AND ( wp_posts.ID NOT IN ( SELECT object_id FROM wp_term_relationships WHERE term_taxonomy_id IN (7) ) AND wp_posts.ID NOT IN ( SELECT object_id FROM wp_term_relationships WHERE term_taxonomy_id IN (8) ) ) AND (((wp_posts.post_title LIKE '%jaune%') OR (wcj_sku.meta_key = '_sku' AND CAST(wcj_sku.meta_value AS CHAR) LIKE '%jaune%') OR (wp_posts.post_excerpt LIKE '%jaune%') OR (wp_posts.post_content LIKE '%jaune%')) AND ((wp_posts.post_title LIKE '%vaste%') OR (wcj_sku.meta_key = '_sku' AND CAST(wcj_sku.meta_value AS CHAR) LIKE '%vaste%') OR (wp_posts.post_excerpt LIKE '%vaste%') OR (wp_posts.post_content LIKE '%vaste%'))) AND (wp_posts.post_password = '') AND ((wp_posts.post_type = 'product' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'acf-disabled'))) GROUP BY wp_posts.ID ORDER BY wp_posts.menu_order ASC, wp_posts.post_title ASC LIMIT 0, 1 

Can the cause be found and corrected on the basis of this information?

Thank you in advance.