Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c4d3d326db3c84d1e764192a871333180869d17a3963661a686c5d8d97161b1' 
  AND token = '/lxI5dt5r7q3ki+6Ov+DWvYGBf0O79ZIvPlcwbp+GcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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