Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e7ae70e687506c99c0517e83cd61e4f42fffee70d57cc31f0d02e8049c58774' 
  AND token = 'sQ8UJQvz4twDSRSD9T7Q+ww8InVUZpHgR3DFBSR3LtI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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