Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44067b91144874118f7945f5a17ce5772449539dd8e0f3bb83c5ad39776f9431' 
  AND token = 'fGnt19PRWPY5nqlNDvfql7W0KcUuEuMu2pFU5OH3sO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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