Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd76e3ebed401a3a1b5084f23a92a508a9959c8deeea578dddcd341df4a04520f' 
  AND token = 'qtdZ7NYOIB5XrxXl7Q8nlBYgojU4g+MAdWyp0tSjTAI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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