Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65c1ebc7df14100f3531bcdfa0c118f539bc6855e26e729388a85d1c0f834cf0' 
  AND token = 'fTcJFPrNw1iscCZOxcN5aVWlVcXC2llbmVidjmYg/q8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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