Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ce1b376b27a98565ab1bfbad2e4ae418bbc7b68863fd6b310b5be8abb68c686' 
  AND token = 'ud/x/kNIoMWCcM35aUGQG45ifK9tFYfDE1OWJSuazLU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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