Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '116fcdf65f217b8caae3a00c6fe451396db798c994b0f7d0173646123603b613' 
  AND token = 'oX0Zsr055Lap2recdeUk2IqZHu+x6fu2ny95RvyMTSE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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