{
  "tenant_period": {
    "plan": [
      {
        "id": 4,
        "parent": 0,
        "notused": 49,
        "detail": "SEARCH model_usage_events USING INDEX idx_model_usage_tenant_created (tenant_id=? AND created_at>? AND created_at<?)"
      }
    ],
    "result": 1000000,
    "elapsed_ms": 4.33
  },
  "legacy_coverage": {
    "plan": [
      {
        "id": 4,
        "parent": 0,
        "notused": 164,
        "detail": "SEARCH calls USING INDEX idx_model_calls_usage_utc (<expr>>? AND <expr><?)"
      },
      {
        "id": 21,
        "parent": 0,
        "notused": 0,
        "detail": "CORRELATED SCALAR SUBQUERY 1"
      },
      {
        "id": 27,
        "parent": 21,
        "notused": 54,
        "detail": "SEARCH usage USING COVERING INDEX idx_model_usage_task_tenant (task_id=?)"
      }
    ],
    "result": 10000,
    "elapsed_ms": 17.72
  }
}