Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47da2f2f05affba12ae48cb27747e30fab011d6cd90d6177c540329bac3db8ff' 
  AND token = 'f2qK4/OvQPogF3zab+KIcsJR0OOCn/kgZhz5Xtx0vJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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