Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '574500cb6d33f8cf5f6eaa70c204930d127d460be4598e6c04c906789e84ce0e' 
  AND token = 'jvynVem1j1OuRJ2ECIskAWCqTR7FjjMUd4qI5OdCUvg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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