Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7da924db24d9984b862073ac56f1a34a9468c6b3fabc0a79d57f90d8b10f1f61' 
  AND token = 'XEw0z3Bu2ZUCEllDUZAoF9k3vluKarnXtpWerH0EUzE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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