Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dd3940e82a46aea7be4bd3774a0e47ef25eb41bedf02f69e19d801ad054219c' 
  AND token = 'ehFfBhc55ul6E05Em2W4jWi2ozmgiwh/grR+lUWr9+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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