SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9919521c156375c4bb5b88706341bd96d63c93652942d26f00475e763f45ac29' 
  AND token = 'cqZ1C/cxJ5RLKyreVCjBZzHk4yXcZGI44C3BDhz0q7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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