Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a3853ef312b5ba8980769c96b828c05f746837581efca66ec3e96812e88fb02b' 
  AND token = 'moQUJs4JstwSEWfI1BScsaTl4o53/0FETY5wlzn+Hso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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