Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c02097e2255269fbe3c68bfb5fd091db0a8abb5c8195c8774999588a2fea5c0f' 
  AND token = 'KDDPjrL2IrN2ZaRosoQO5TIU9h9wqwWii1XMsx/jqeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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