Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35c8bd732e4d6a579971d4a7c81c96e5cf41e6ed816b73bb49f26a2f2ec9bdce' 
  AND token = 'uuxjW3wWud5sjqRInmsDERrPLHTgMGY89QWUhaLC6V4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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