Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc0e096f6b9b354704e5c5371f1e9b9d8840284940ac6ca15d7cadbef5bfbfd1' 
  AND token = 'iGNCsKV2W5CDtNNlsAoz2NF++3LWWbStdnUycLjEjGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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