PROBLEM: Slow query to verify orphaned files > 60 seconds and solution

[Studio 42]

The key is missing in category_media and manufacturer_media table even in last release candidate
  KEY `virtuemart_media_id` (`virtuemart_media_id`),
So if you check for orphan files the query need more then 60 secondes for 1500 images in categories
I added directly this key and now the query need never more then 1 seconde.
Now checking for orphan medias is 100 X faster !

[Studio 42]

Damn bug on editing a post.
Again :
The key is missing in category_media and manufacturer_media table even in last release candidate
  KEY `virtuemart_media_id` (`virtuemart_media_id`),
So if you check for orphan files the query need more then 60 secondes for 1500 images in categories
I added directly this key and now the query need never more then 1 seconde.
Now checking for orphan medias is 100 X faster !