Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e45c233e7c95958f0a829b4c40484b6cf30741c39aab32a4a4976cfe6de28185' 
  AND token = 'ZgVzGwY0NlH0VZmQH8m+5oG67QEWBklt97C2yVt1Du8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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