Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7157bebc422eb8eefa17783d8f839fbbda161b682afbfdb98728d800fb4446c6' 
  AND token = 'nB8xx0uKvA8T6evB28O1MqfmtuExJo/CSj57OseBUJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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