Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfc713776593c1c2ae16149c31c13d3df0aad170c107e38a5a293e3825dc5b9b' 
  AND token = 'xaCyLl85Y7iZoFVedVa4VSQkM756zVqLTgqr/d+VfuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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