Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b69c5a6c2b3311d3653146b8d185bafc25452a6567868989bc747e510c05dbfd' 
  AND token = 'GQT5aPfPhTtBsiqDzHQ7f7BICkBDBPx2p3I/mBewqlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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