Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2183597d41d58a54d4033ecaa9d64ed246c9b10e39a7f310f768fd93c595d660' 
  AND token = 'ZSlZBIsIFd2txsOoDSD+1WORBcqL1OohBcFai2+DpDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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