Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1069e5c63c2dbd5cac6575285c6accfe8d895522480fe5d90cdb9711584d5fec' 
  AND token = 'lZIhoDAPPSsahGAuOfE+CSspGczittUj7F53MCcQjVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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