Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f0969b0babc911c1500873256161ab77107a8d78c5544b45267557d525541bd' 
  AND token = 'tp4kkXT8f7QJx91nLhkabxpnQ6Gu8TU1f9z49Czb20U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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