Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e89e4f3e08bcf29806ed5e7c7116d6d3c298ce14efa7d3664288781362e1bce' 
  AND token = 'vhW6l4w4aoqbKQN+tjelyWiObU0vuwHVvYkBTG6gW44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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