Zoom in or out in time

In the Timeline panel, click the Zoom In button or the Zoom Out button , or drag the zoom slider between the buttons.
On the main keyboard, press the = (equal sign) key to zoom in or press the – (hyphen) key to zoom out in time.
In the navigator view, drag the Time Navigator Start or Time Navigator End brackets to magnify or shrink a section of the time ruler.
Dragging Time Navigator End bracket to show more of time ruler.

When zoomed in time, press D to center the time graph on the current time.

AfterEffects