I thought I already gave you that answer.
The Father was the Only True God at the time Jesus spoke those words.
We know Jesus is the Son of him, which is why the Book of John was written.
Eternal life NOW is in knowing both of them, as in who and what they are first, and then knowing them on a personal level.
You can't know them on a personal level, if you don't know who they are, it would like saying you have a personal relationship with Father Xmas

The "now" is in the context of -> In the OT, Yehowah the God and Father was the one and only saviour, but he was always going to fulfill this through the future one, Jesus.
In the NT we see, the Father ref as saviour on his own in verses, and likewise for Jesus = 17:3.
But the verse in no way suggests a trinity or references the Holy Spirit, as that is the Father.