Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0af26d7574d5d04d83e1bce60664a22d39164966397d494265d8205abe9021c' 
  AND token = 'SsdqxWANPreBAgeuUypWqXz4qspVD/LutwT2SkmanY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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