Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1422c97019b9b6311a6fff050f1b64965d4515de9387434dd6baa1566bf012f7' 
  AND token = 'gLvUMXEA8svHdzUXTVPx8KxlTMN3kIO4QP2NA8j6qXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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