Charlton Heston was 45 in Beneath the Planet of the Apes when he played the character 'Taylor'.
That was over 54 years ago in 1970.
In 2008 he died aged 84, starring in 155 films in his career, 111 of those after Beneath the Planet of the Apes was first released. If he were alive today he would be 100.
In Beneath the Planet of the Apes, I think Charlton Heston looks: