Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6732bb0613c0a6d3e14b820a3b81a18de2b10f3fa257ea3fb43352b8617891dc' 
  AND token = 'xInY0ryEnW23OHiVFFvd/7yqpl6gpGU7n3dODEWvMlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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