Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60556d357079723f4fb09dd4f566e886fe1a0cb1e05c02c9861bd7a57665eeca' 
  AND token = '6dQ9pCTfHSi3aD017O1e1gzZ/y7uEm0LxmNLjLjjmSI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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