Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '24cbb1978d502dcaed42f39659975ba2a462978ca8115342d99432a4eb3ca187' 
  AND token = 'q8KFsGWcxEM83tUy4N5WsCOIzx8PqFeDlM198tO4SU4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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