Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbd7a7134b2af63fea4c1ae3c65ba6ca0077dce74f561700b9a51d756e214ca9' 
  AND token = 'W0Wp8bBL50wWR+jGrDQtlnx7hztBLhTEpTPZV+PcH70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}