| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SIMPLE | b0_ | const | PRIMARY, UNIQ_321C84CF77153098 | UNIQ_321C84CF77153098 | 258 | const | 1 | |
| 1 | SIMPLE | s1_ | const | PRIMARY, UNIQ_16C8119E77153098 | UNIQ_16C8119E77153098 | 767 | const | 1 | Using index |
| 1 | SIMPLE | b2_ | const | PRIMARY, IDX_8417B073E9ED820C, IDX_8417B07372F5A1AA | PRIMARY | 8 | const, const | 1 | Using index |