Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03cd8ab4681031243bc48a17bf075a51693682f06b69aa6b416375736bbbf581' 
  AND token = '872ztoUg89j1u0H7fqyxeVEeoOZeChz/FEWzmqko198=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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