Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
libnssdbm3.so
libnssdbm3.so(NSSDBM_3.12)
libsoftokn3.so
libsoftokn3.so(NSS_3.4)
nss-softokn
nss-softokn(x86-32)

Requires :

libnssutil3.so(NSSUTIL_3.12)
libpthread.so.0
libdl.so.2(GLIBC_2.1)
libdl.so.2
rtld(GNU_HASH)
libnssutil3.so(NSSUTIL_3.12.3)
libsqlite3.so.0
libc.so.6(GLIBC_2.4)
nss-softokn-freebl(x86-32) => 3.36.0-5.el7_5
nss-util => 3.36.0-1
libnspr4.so
libnssutil3.so(NSSUTIL_3.24)
libnssutil3.so(NSSUTIL_3.17.1)
libc.so.6(GLIBC_2.1.3)
nspr => 4.19.0
libnssutil3.so(NSSUTIL_3.14)
rpmlib(PayloadIsXz) <= 5.2-1
libnssutil3.so
libnssutil3.so(NSSUTIL_3.15)
libc.so.6(GLIBC_2.7)
libc.so.6(GLIBC_2.0)
libdl.so.2(GLIBC_2.0)
libpthread.so.0(GLIBC_2.0)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libc.so.6(GLIBC_2.3)
libc.so.6(GLIBC_2.3.2)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
libplds4.so
libc.so.6(GLIBC_2.1)
libplc4.so
/sbin/ldconfig
libc.so.6
libnssutil3.so(NSSUTIL_3.13)
libc.so.6(GLIBC_2.3.4)

Content of RPM :
/usr/lib/libnssdbm3.chk
/usr/lib/libnssdbm3.so
/usr/lib/libsoftokn3.chk
/usr/lib/libsoftokn3.so
/usr/lib/nss
/usr/lib/nss/saved
/usr/lib/nss/unsupported-tools
/usr/lib/nss/unsupported-tools/bltest
/usr/lib/nss/unsupported-tools/fipstest
/usr/lib/nss/unsupported-tools/shlibsign