Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65000a04cd618902f2c05fe38cfb0c7d942849069edd3385612d4e18daaaa923' 
  AND token = 'HgXEfJ/kNBVIHjIou5Fw0Kg/kfuG0pWC2ZIoeBmwaQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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