Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9115febc562a0007186cda262d22ac4a9847e3711b5cbfc73db1c25fb3ec790a' 
  AND token = 'R+qaIAe5pO0Sogl1WVL9pZMcOiMBhNMHNtHpSh3lxIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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