Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c772ae2978562bbf31c71d4666262720ab72d5649c4c127bfc22912d9035fe5f' 
  AND token = 'EJlCWWk+XzKAJSLkD4y7Pq8fNRA919xno9Y/TuFTwz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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