McDonnell's Model 125A is described as an "all-weather reconnaissance airplane project", and is the only McAir design that's been identified so far as a specific recce project from the start. I doubt however that this artwork could depict a strictly recce aircraft, as it has kind of a fighter/bomber look to it...
This being said, the project immediately before, Model 124A (which could very well have been a parallel design) concerned a "carrier-based, two-place long-range subsonic missile-carrying fighter." Both projects were for the Navy, both were from September 1957. So maybe it was one single general design leading to two separate studies?