Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f3f4d6c1fff308648efd51babc670f861e798ff0410d03121b309ad42eb0c7c' 
  AND token = 'sOdcCQ0aBlS5HDhQcusLDiISFNGwH4ltDukSCltLD48=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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