Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7109c57f865840c630baaac1af93d730c7aa3728d93438bd358a1f7d6c4515ff' 
  AND token = 'awIBzKDNqpGvYEPVLxdFzefMv0NaGq7P43PEpdeoNyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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