Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfe8c45e3101a84f2f9f93b2d70811a86093c22996118f7434f672d4e92be5e0' 
  AND token = 'eby0eSE2pabO7bauvLMDxo7QVdb3YSsshFhBnqMDEDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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