Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a48cae405e663d4c05051150963ea55049399c22198c3490f6b07262d2baaa9' 
  AND token = 'Ekd2bOQMlvt4BF5UoXK8FwBFBLeJjfBMQtHI16HEs0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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