Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '305db3673f57aa6e835ff70d3d1b8e9dbde9bf254f1cd0a72681a9aac85b9b95' 
  AND token = '/6Fp9JCIA3++0fGVNFoyTbJHE9rS9It9cXRuM9VdPOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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