Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ac9baaedec858434ed5148df4e62ca0fd0859e0ae59971a921736536c980acd' 
  AND token = '0P/DdC9BOWJj/GbNMP/r1qd7bEA/EiXmUu2eoRqq8Yk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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