Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0311d8e770e42bed8866e99135e33b308feb90fadbfcebbb23299dd8967618d2' 
  AND token = 'BkGY3CxPHeFOqEc4ePAY39QpfHNcBBSBdanM3x/h6Ko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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