How did the ratification of the Constitution affect indentured servants?

Ratification didn't affect indentured servitude. The passage of the thirteenth amendment in 1865 did.

See
http://memory.loc.gov/ammem/awhhtml/awlaw3/slavery.html

"In 1865, the Thirteenth Amendment to the United States Constitution ended slavery and involuntary servitude. Nevertheless, many laws and judicial precedents that had been established before that date would not be changed until the mid- or late-twentieth century."