Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9722df676ef39da2a81880a86c4d05c1537e8824227463e4a296a3279927f574' 
  AND token = 'bFC++Y2zz+pkmw94QCyS6q7kXe6KHM9nn+XMoGWFW4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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