Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4810c3e7d999fc8b1fa6f25832d32a178c4c46aa0fb0e9d29ae4798a69a04455' 
  AND token = 'ZHtI8ULRBV4kBV3nJAL9TuNv+XebniKRvorwa5SJVh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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