Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c054962387a663e13243d21dcdb4d815f671e760b6eed68f8aedad122fb40e46' 
  AND token = 'sLmFh3UuulsPDIZVpG73yYRDU2ffZf0TkXLejZzY8LI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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