Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f809db9e9d9bcc03821862d48e457d5bc19294d2e909b3f99247ce73fc4ba571' 
  AND token = 'WMacd7aXK5O29jZrxVXqmvtfX+AojQKz1wHfQLZkAHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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