Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '7bd66e6818f7d327b6d3356e25b579588799ad846a5f60db5a7b0c8b6fcfda78' 
  AND token = 'xrDUzb9Zh1kqMVZIA7nOZwes3WlBjhkGIfy9rW8mGk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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