I've written previously concerning God's experience of the moment within creation. His timeless experience of the moment in creation means that he's not only always here now, but that what was then is now and what is to be is now for him. We wait on time to unfold--past opening up to present, present becoming future. God sees the beginning from the end and the end from the beginning. He sees all things in motion through time, at once, and he interjects throughout time to affect and influence where things go, at once, and leaves no scar on time to trace that he ever did so.
It is not necessary that he dreamt all this up in the misty ages of eternity, as if he always, forever had a plan to create, and then decided to instantiate it in the moment of creation. He need only to have had a thought and said "be," and in that instant all was what it is in all its time at once before him. From his perspective, all stuff, all time, all the us there will ever be came about with one all-wise, all-seeing, all-knowing decision (or perhaps six day-long decision). The thought that precipitated that decision has not passed: this, right now, is that thought, not the echo of it as it would be if he had to perceive it through the long ages of eternity before he acted.
Really, that precipitating thought was the only one necessary for God to have undertaken regarding all creation throughout its time. Extended pre-planning, meticulous preparation, experimentation, and trial and error were not necessary to bring creation into being. God is wise enough, knows enough, is powerful enough, and is unaffected by time enough to put all this into play, and to still allow creatures free will within time. We are in that moment, the very same moment, and the only moment within the mind of God that produced all creation and in which creation is sustained.