Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0612bb80c6ac11b4621437d73ccd8c9829055b98045074e7fcf57a82e679b5b5' 
  AND token = 'dUqzCvyUrkIic1mT1pBtuwhLlHAQao27lCOh2eHo9e4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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