Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7426539da06904adce3d985e8f4575c41f98c4deb58b5409048a50b8915131e4' 
  AND token = 'l6u7p36RB2VJoJUF7BhKn4dtJSJjxpSvckG6P2oDNzg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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