SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '05c29961390d88237284c873efd9dcae5999f293e81914ab2bca52e7ecf35e48' 
  AND token = 'JG+9gA0p6GSxRv2EAijZvMGpGPd8USoEg0ZFCQwhYA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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