Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '383990951b5d36957e9a1ed7c7d6059159af2b3a6df928f305ad135ce36ae22d' 
  AND token = 'GNGZk9rct+2M9wOatUef0MeUSOxogtVX1GKIqIhYX3Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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