Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5020af482dcd16392512d3cda1ba487e79a8bb1190396689ef040a651b4d70a8' 
  AND token = 'GPHvnQo1mSpu144YbJYIA5ISAPjguKVRm/HxnL0RAYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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