Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c96d0ab2e415fc8360c0105d575701b876c11a37e0397b6f2ce76f6e58dbe416' 
  AND token = '7Kd7LA9eNI1PEg2sM1wc3oshWm4xL/PDFKg/7T7RgJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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