Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '977a152a0260721eca85e959bca2f600926845047c66598a99a75e41abce297a' 
  AND token = 'N9y609GEupsXSWxCwJ9UTpW5CmVbD1jYIrtXYpi5PlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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