Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9824ba7581099f27b086c5f55a48abe433bf6a5499fc85656019a00414416c58' 
  AND token = 'tHyy53RNu3VS7Qx6hss5PCLVjwaC5Hro4KxY9d+Z/sQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00075

JSON explain

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