Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '81e59cd7273b2713a63b201d4a65e4fe86b4e3092738822adfdfc5a368466ef1' 
  AND token = 'zk0+DYrm8iWkH2HUiDkTXILwL7cgBYQmOAmRHNUaiV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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