  We study a family of equations of state for hybrid neutron star matter. The
hybrid EOS are obtained by a Maxwell construction of the first-order phase
transition between a hadronic phase described by the relativistic
density-functional EOS of the "DD2" class with excluded volume effects and a
deconfined quark matter phase modeled by an instantaneous nonlocal version of
the Nambu-Jona-Lasinio model in SU(2)$_f$ with vector interactions and color
superconductivity. The form factor in the nonlocal quark matter model is fitted
to lattice QCD results in the Coulomb gauge. Owing to strong coupling in the
vector meson and diquark channels, a coexistence phase of color
superconductivity and chiral symmetry breaking occurs. Our results show an
approximately constant behavior for the squared speed of sound with values of
0.4 - 0.6 in the density region relevant for neutron star interiors. To
simultaneously fulfill the constraints from the Neutron Star Interior
Composition Explorer radius measurement for PSR J0740+6620 and tidal
deformability from GW170817 it is necessary to consider a $\mu$-dependent bag
pressure that mimics confinement.
