The animation events system allows binding events to the exact timings in the animations of your choice.
You can install via git url by adding this entry in your manifest.json
"com.pepengineers.pepanimationevents": "https://github.com/Pepengineers/PEPAnimationEvents",
Select the desired animation clip in the animator window, then press the "Add Behaviour" button and add the "Trigger Behaviour" sript:

Then choose "IAnimationTrigger[]" in the Triggers field:

Next press the "+" button and add the trigger of your choice to the list:
You can chose the timing for the trigger using the "Trigger Time" slider. Select "Once" if you want the trigger to happen only once during a looped animation.
You can preview the object when setting "Trigger Time". Lock the animation window in the Inspector and select the object to preview. Then press the "Preview" button.

Now the object will play the animation, allowing for more prescise timing selection.

