The question comes up around the 5:50 mark but Wright says a few things before getting to the subject of equal pay for equal work, which is right around 7:50.

After saying that she told the producers "I want to be paid the same as Kevin," she goes on to say:

It was a perfect paradigm and example to use because there are very few films or TV shows where the male—where the patriarch and the matriarch are equal. And they are in House of Cards. And I was looking at statistics and Claire Underwood's character was more popular than his for a period of time in a season, so I capitalized on that moment, and I was like: "You better pay me or I'm going to go public."

The New York Times has more background and context.