Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d059e765727f97afda5096df9b245ab54f3ded720d07c92590eb4699d5302e0' 
  AND token = '+JOVTzVB47C9x7zYk4VTfxbtqrKKWFCj+DPxke4kHtw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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