Data:
table: lookup_cache
index, zip, node_id, distance
1, 901, 3, 123
2, 901, 4, 232
3, 901, 7, 432
4, 901, 8, 232
5, 901, 20, 423
6, 901, 23, 231
.
.
.
19999999, 98999, 3, 123
20000000, 98999, 5, 123

SQL:
select * from lookup_cache where zip = 901