Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c73f2cbb510469395486f1b1685a1014ab9cb6ebda0497b5e1f2911ceb231ef1' 
  AND token = 'GlpnXYh42JGCvPZUA0cSs6YaSfR7m+QejFGo6n0A8Vk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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