Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fef3f278b7629db8974edae4caf7d1ecd12a4f7ef548707d64823bf86c3a4323' 
  AND token = 'XCFG7BmBmglKTNByL0k26t63PoGuA0N0CQ/0ly3nZw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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