Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0522fbd29c6f573007e31b3bd5f7c954bb0dd5f115a59c57c8449b7b4e97d2d7' 
  AND token = 'WZ8DB8ASnd0KqJR9/vY5ayqp0aHMecqX4KNxJ/hIgcU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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