Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60f2892134d55b5e8ac8740c62a37915dd50ce16e4306289dc819fbb8b4e9278' 
  AND token = 'GRqJbZcrURiz3rER47Goib0Yaq+OecmmSfE0CZmZ0xU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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