Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2de074bf140923993863ffcb0bea661201903919fd862278c0cef930cb381b6d' 
  AND token = '/U67aHHXrcU1WDbD673zur2dOATEkyeidqGKIfGCViU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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