Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e474f002b06c7c9d9139b6e52ae3225f28081f8ca85dfa9796090fe6384baed' 
  AND token = 'jf19XXCXUD2splLjwuz6IPE79AhKzumHE6WTt9/7+r4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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