Probably not to be honest. QR can be pretty fussy about age and they do have a desired age restriction. The management has also sacked several crew members for their age.
I know of one person, around 35 to 40, who attended an open day and told that they were outside of the desired age. They could also think of you being too experienced for a cabin crew position as you have over ten years experience. If you have experience from a first class enviroment you could always try Qatar Amiri.
However you could always apply and see if you are invited.