I know of two that will give you results in approximately 24 hours (or less). Just a warning, both are expensive.
https://www.doctorstestcenters.com/flychi
https://covidofchicago.com/
I don't know if the actual tests performed by these locations meet the requirements of the UAE government. You would need to call and make sure of that. I have a trip coming up in early June to South Africa and plan on using the location at O'Hare as they have a RT-PCR test with results in < 48 hours.