Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '236e652e1ddcf6d82cde6a3e2641d792f8562e620355d6762775a382dd3e8b12' 
  AND token = 'oNVaJlLh7MW8pYmkhFLOh4rwKgP5IaU0o+QwXwKDJ4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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