Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e20acb39e566e50b8d32471533b58295048f589645b1cb46509596c3414b0d8' 
  AND token = 'AYYXnzXibo637vx05BKkzz3dOZWcxp/dJm2e/eBzrwU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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