Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f58d028f1ce8ee910fd5a4e63fe5753b6444d22f375c43df749a520cbdb9abab' 
  AND token = '3ojeJ40GDgl+fqzcxWe/73EKfE78UbqW0oGSeaMsffE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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