Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29f42515dbd84fc9c4de72757a7837ef014de025b017a3528558b80494e57700' 
  AND token = 'g7Pl5Uw+96VvMVo8knVTCiXYEXW067Mzd+VtNatcH5U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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