MySQL Slow Query warning

Hi,

I set up a fresh installation of WP this morning and have just received a warning email from my webhoster:

MySQL Query: select meta_id from lstb_postmeta where meta_key = \\\’_edit_lock\\\’ and post_id = 1

I am running WP 3.9.2 (German) along with the Solon theme and the following plug ins:

• Calendar
• Great Circle Mapper
• Photo Gallery
• Simple Custom CSS

Any ideas what might be causing the query, what it actually does and how I might avoid further slow queries?

Thanks!