Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd195143efa16adec70a7b9440e42939ce6e65fb871e170cfcd781975ec7ad06c' 
  AND token = 'Wv7niS6PTiP24kanD8wUjpGCVzMNbNcD95Bwl+Xa9Sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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