Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef07d9fbd7c29053138fad6dfa53d52f44340952eda2266a6200ceda48ae030b' 
  AND token = '9cPuaV22T5Z19toC7ewUlhfPlPjPkE7qvQd+HGRwh5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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