Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa056eafcd8d72f14e67e487d322c013a9b466b2b3cf0251098557f147ec2998' 
  AND token = 'wVqMotg6TkpZEs3oJ5jwNMoMLViCdbKod1rGki6QPB4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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