Hi Emme,
Not to my knowledge.
The only way to make them easier to select is by CMD clicking into the timeline itself and using the Advanced mode. Which creates vertical small stripes, but these can be selected in a much simpler way then.
The Animation Interface might be more helpful here, but I guess you have your reasons not to use it.
Here is a link with the “advance mode, it is a one minute clip:
https://www.amazon.com/clouddrive/share/XFqc0y30HazOEtkT6ATlstpazgYi4cRnzPjnn6ZuOb0?ref_=cd_ph_share_link_copy
I pressed the Shift key to select that area around the key. ..and yes, they are tiny as well, vertically, but way easier to select with large fonts.
All the best