Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64024c1f264251f6fce17cf9e1377c4797c412b9de834bc9ee868ab23a29358c' 
  AND token = '9tqnwpsYn0DuFaMG0m+fgdf2MMLQ7o0k2iH0SdWpjyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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