Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '572b9be25c2fc2274cdde1bc04b99c6e39863bd86474377dba32592aac69e321' 
  AND token = 'geEUI+NiJglIBj261cghSaMh8NiD7kXje/fqDIJZL/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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