Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '369ddf897ef6d33f769b51d3bc1e56d4335c119ffc185bd7438bd33332161354' 
  AND token = 'rvRvE9xJk9bBA5be29y1ZWZqtKiPWxDUfOCgJLSTbhI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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