Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '72ad66afe43ca5b3421507e76bee3e090da96b2da071a8844c987fa9d7464117' 
  AND token = '32umoNXJ8PYyOwWlnnx3WHN9rfYCF5rxGRplJh69k9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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