Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd230594ad1fa79838f9fc5118a98476395e119e80f3b215bca6535e024050941' 
  AND token = 'LseCetwtIEvb4txZolSOx2WKHJKJrNZepySqwGWCYas=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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