Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dba9ba5bf2e284e7bf558c51b840ef93cfe20bf9948434557d2e87c4b9272fd0' 
  AND token = 'liDphLwxMFy5jDeoRb9Y5QgPiXs60lkG7oSoBvUlAuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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