Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '080ee51555098178ebe8c834ac698be14f5e7325a971bf5a9da36db6f3430c46' 
  AND token = '637aJGWZDh0I106R351j0e65IA23NsQVus0+RYS7CCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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