Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43261df550e942b73b3914967e574e97f20170022c540d3cfd7b774915284b76' 
  AND token = 'XxvXxeB+1zLtJI5u9KtqiX1ztPlVjmItjxfXOEejiio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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