Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14eab08c1f4fbfb3b136a77281d41b6ce35c483d283f3d98ff5dce02094d3c3f' 
  AND token = 'aLgzfw4dmuThLb2jWhKftewd6VZ4PzsF7svF8xNTD6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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