In 2020, he starred opposite Ushna Shah in romantic television series Bandhay Aik Dor Say. That same year, he played the eponymous character in comedy series Shahrukh Ki Saliyan, opposite Ramsha Khan. In 2019, he played a pivotal role in acclaimed television series Alif.
Khan was appointed as a CLF Goodwill Ambassador by the Children's Literature Festival on 30 July 2019. His performance in the film earned him a nomination for Lux Style Award for Best Film Actor. In 2017, he starred in the romantic-comedy film Chupan Chupai opposite Neelam Muneer. Since 2016, he has also turned to production, with the socially relevant series Dukh Sukh, being "tired of the same old 'saas bahu' dramas", and as of 2018, has produced more than twenty works for television. He received acclaim for his role in the 2016 drama Udaari.
He hosted a quiz show Hayya Allal Falah on Hum TV in 2011, during Ramadan. Then he shifted to television appearing in many television dramas throughout the 2000s and 2010s. Ahsan later appeared in the films Ghar Kab Aao Gay (2000) and Billi. Khan began acting when he appeared, at the age of 17, in the 1998 film Nikah and the very same year did Hans Ki Chaal for PTV. According to Khan, his father is half- Pashtun and his mother is Punjabi. He's the only one to have gone into acting, and when his family shifted back to Lahore, he earned a master's degree in English literature at Government College University. He was born in London on 9 October 1981, into a family of five siblings an elder brother, two elder sisters and a twin brother, who is an author and poet ( Yasir Khan ) from London.