Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd207d3026d425574e52527ecb0eaf68ce84dcd9b9542b19223a3a5ab8d5dcba8' 
  AND token = 'GBlf8qaA/cGSn5TU2oim3IFguMZyx921Hu+aBOxpzvU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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