Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '114d5a9bd55419e64ddbc75629c36d263f409435d7109fa6420a13e54530f12e' 
  AND token = 'eIwq02Ej15X8QJ/VmnfuiL9aLGzZYQNG244uuvur7yg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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