Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac7223c64626bcf0f1094895b8e1c205beb033a6605e212f95539a1cb8f7a142' 
  AND token = 'MPkFa5jKTU3qO7ACpDYsFOpK8fYSDTwiKs2o2gpYwQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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