Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '064ae60807902197cee2b68bfbaa0973f49f71ff1dc4a5c94946e7ad397736eb' 
  AND token = 'zW8UcyKUPbTbgf2ixdln2vTsJWTIXuGW6+reNm9TyRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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