Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62909ed66ad36f8a787aee3da19dfdcc23b16ffde55cef89f001f7ed98577a9a' 
  AND token = 'ymIoQlAWIcZ1NOK64/1Nvpoeu9pXuTE3O/voyJsn98c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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