Can I ask a journal editor about an invited review paper?
Is it a valid inquiry from my side?


NO. Invited reviews are the word "invited" means. The other party invites you to write a literature review paper because of your great expertise. You do not invite yourself. If you are Mr.Nobody, the whole effort of self-inviting will be embarrassing for you.

That does not mean that you should not actually proceed with the review paper. Just keep in mind that review papers are usually done by respectable and well-known authors who have contributed greatly and have great expertise in the suggested area. Also, remember that writing an extensive literature review may be very time consuming if you want to cover a great area. This is why review papers are done my multiple well-established authors who contribute almost equally and not by a single inexperienced author.