Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f5c8b3927e3203357f6978bf59e26eab592c5f092020129a445eb33342d4db7' 
  AND token = 'uFoyIxB49zJPu/yZxfiaTbehIhoUFGD0jLsw3qATWbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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