Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c684286f5dbf8c756da626a817596e016d6ff1967ca66cad268990cceaadce4' 
  AND token = 'CYbTkhix9AqWjo9dIvHgJ+Hvyu6/S7EwjkdsiNBpHaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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