Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32b4b7362197a9e71af33565d33adcfa9dc0b438775c604375ec5c85b7b9e13' 
  AND token = 'WrK7WKEgPyNectS7l3QkidhYvvVwupKyzPTJo4cqLxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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