Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2067d84f831de91ddd04c30be341862069ff6ce611ad23d714e94976870df8f3' 
  AND token = 'C6yX/bpW5gNWdzaHwKvNO6D8FquHydF6S+KrZsM5ajw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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