Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3aadfdb155f316cd113e29709317d1a8c452346fbbd6525b87c24d7fca196ce' 
  AND token = 'YnrEFoxuku993Wgwj9vobMLR/SSsI9K3yfK5HkLRxFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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