Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74f0bfb8f844622ae5c5f51f380fed84f67ff2beeddedf6559a3a10b32d7bbb3' 
  AND token = '0ypLU9iCdyMHUiMZn5QgiW92+voTre2dXeVowN+naz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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