Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '859f30e892ee0079c1242059786b5e8ea149469a06c97d2b94d9628ca3ba0316' 
  AND token = 'I05f3HgW0BKbPTlxb7mOKabWXk+2W6iIeLtsm3PLYJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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