Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '072fd025997f514b4391007550f8e954837345259cfbb780393650c98ade856a' 
  AND token = 'EKdPlumiubniS7Nt50RBYoL5DmycjfXr+BqA/0R74fI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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