Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7a54ae3f1c4f4c3672cbf2fe71b9c4f02ecfae713ef1d97758b4cfa3741cfe1' 
  AND token = '1HCtU/1nQWulmcx09/NbULalmW0gN08DQrTugAORfjY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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