Photoshop Editing Technique Assistance

This is not my image - it's here to demonstrate the technique I want to achieve.
I'm hoping to get some advice from any Photoshop experts knowledgeable in fine art photo editing.
I'm trying to determine what editing technique was used to create the mood in this photo.
My intention is to apply a similar effect to a staged photography project I'm working on - not to copy the artists' work.
I believe there's an application of a matte effect but am not sure. Also, if that's the case, is there anything else that's been done to create such beautiful texture and mood. There also appears to be color muting, haze, dust and light beams.
It's very subtle but also very effective.
From what I can glean they've been shot with Canon EOS 6D and a 16-35mm lens for 6 seconds at f/8 at ISO 100 using the Adobe RGB color space.
Any help would be greatly appreciated.
Thanks
Mark
