Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1595f2bdd4d75372b6380132fe4b3ae2de7c62803d3f9a46719a94c8b6eb23c6' 
  AND token = '5dnXaJrX2l9OWj7rn5hmWOe8OZ4Khy9X8m7IjB9qfKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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