Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e59c5b77eedab0718aad7c2d0ee3e3d12cda55ec4504d8386a6db4e87d07f166' 
  AND token = 'wlK2Iu9xWPLz/Eld9fiZRgdQGYyS9Zdn12jaNtDuqmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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