Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dd948069149a1eaea6fdda81fe06e9f1282bbb85f7adbe15aad9fdee1366cf2' 
  AND token = 'HCAnQoKqVSukaPEmd60rC7uLaX4o9Tqe0aPxmHHu7Dk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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