Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e73df9e4c7146a577aa8fb74eb48169a2214a77c453ecec0d95c6fa1200b02c8' 
  AND token = 'G844tqTCBB6ODLU9lFUxbWVPjyZWd+DyaMd75OOcyj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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