Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '026c7d8b7730d0c513ae1d49d0765015686af612003ef388dbbc39746ab9c49f' 
  AND token = 'L+PlbQEwP+ZPhxNK50HspUnG4Osh+ihUJ722Ui3itVI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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