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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '724dd3c9067793a4fdddbc211c545d59c041ca3a228bd2270b081d550853ef3e' 
  AND token = 'y5X61JKQ/II9w5Shg+VW+QfrdO2V5XAFK/Z22R+HJg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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