Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dfee576757828acfff431fc9270b27d749bb675e6d9f3e4a8067ce8e0df04b19' 
  AND token = 'aRkxKABhvkraTyyhGZXBfkwHsNptZdsXWs3PAjnSzMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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