Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e45bc3d6290774cd9f2901cb434c5e02272cb2c2e45c3f5213bad7ea10c5de5' 
  AND token = 'u8JlPn5P/4oHG9jCt/AW/V589hNdjPfi9ay9afRp0kc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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