Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1803e08e6799e20fbc2e48345e4412ce65abe12b8d88199c5f18797b9886c1c5' 
  AND token = 'zDJJ3wQesHO08i65PzbAnoq/LiDpu0phCYcuYXZxXXk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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