Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d8537c009fcb94ae970c0c083a341f8de5d6d4d842ff9228570da10f6a5be73' 
  AND token = 'TRavBAeKd9faj027W+irBeaH7O0JU/6RNq/uzPvK6SI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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