Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e45432ee099b01f7bbbe6a890e6c0970c0f48859c6144d0136c4a82b42926d3d' 
  AND token = 'Or8PUNiyH3Khy8D/odz2igbmLfyKvyv8M+viDtX/snY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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