I have a main model which is named Tour and I have another model OptionPrices. How can I establish a relationship based on this conditions

option_prices table

+-------+---------+----------+
| id    | channel | optionid |
+-------+---------+----------+
| 12531 |    9278 |    10003 |
| 12533 |    5408 |    10003 |
| 12530 |    5501 |    10003 |
| 12529 |    3862 |    10003 |
| 12535 |    9225 |    10003 |
| 12536 |    6640 |    10003 |
| 12534 |    6111 |    10003 |
| 12532 |    5235 |    10003 |
| 12492 |    3862 |    10002 |
| 12491 |    6640 |    10002 |
+-------+---------+----------+

A tour can have many option_prices but its not using the id, it is based on the optionid column BUT it must be grouped by so it will became one optionid

I am planning to use a pivot table but the problem is I think it will attach multiple option_prices and when I am getting the OptionPrices relation, it will result in multi query?

What would be the best approach for this one? Thanks in advance.