Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '487dc75567659ae04d6f47378ea2b632570b19303ba37c69808b44d26a0d8575' 
  AND token = 'vUwhCkB2BiPOSwXNjDf9hZv4UAB1/7U1WEZkLQofiiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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