Does C&M MX24 have a constant pilot light?
There's no mention of a pilot light in the Installation, Operating and Servicing Instructions for Chaffoteaux and Maury's Minima MX2 24 FF NG

In particular, there's no mention of one in the parts list or fault-finding sections.

The circuit diagram shows a spark generator.

As you say, most modern boilers don't have a permanently-lit pilot-light.