Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cba6f6aecaa0eaf220f2ebb47c9d84e5be520302a587e24d6660d2ba81853c1b' 
  AND token = 'rJOle59/EnmL0tR+J+Xio60dqX+qiANx8CB8AwxrDlg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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