Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e830edc6af46e68199dffd8990f899a5ca6ae9460196a9ac76d679cb8736d2a6' 
  AND token = '3xBPbW7I/J7WwEaEDqQosOAdqUNeTZOET50ck4h2b2Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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