Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '020096e3ea8abc438ccb7d9a19f51ac430289da7a59274c71345b1bbe86b5391' 
  AND token = 'aVFtKvB1RiqETfOnTrF0dh8OJKsSMIWUhIBjH+tmT+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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