Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee60eaccd5dac8a4527e635a5e3065e93bd7823f6ac93830fda9385d888e322f' 
  AND token = 'jYXZVkMPcLeBVDXkSP6RxUabDumaBrJXHXZFDWRWY3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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