SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a245bafb97cba36a210e7d1da8c3bec257dc38e14440ab8abe89446cb61522b2' 
  AND token = 'Gmnw2ZGRbg5ooBgmZps6BZ8ONBjSzu/zwL+Z+48LFNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00084

JSON explain

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