Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fafcc88d7c3ae3a94b3f37717e199ea391e9bc011437f722faf33f66aac4bc1b' 
  AND token = 'vXFgZvmcROp5V9Tjn+NH/J4HG4lzLNET4Q3z7/3teW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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