Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bee1bc7d19b272903dd551f47c205a1e75c8e567886e9880c823c1e3ae72224' 
  AND token = '1JBIE49qqltxglGAoJtBwfbdDyLIYnqRk+Men+BUzM4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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