Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db36b97bdf42c638ec5353ef7bf2db3973b5c177b801dcfdab537c0e7e8e368e' 
  AND token = 'wVk3gOILmGxmE3SfjN3XANfgJ4UoD189J/bE1LO/Xi8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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