Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b2bbffc4c2ee04777cc6b5e9d19d8edbf2f03bbc86a58badb59e2ef350e437b' 
  AND token = '/sF4HKFGcCe74+dbkF/krdRZcVuUdLZNdSJIbTnz7NI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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