Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '417ab0adb497ca44b371916cc299026fbd034f9cdec4791993850cd3e4b589b8' 
  AND token = 'hwtV00VYTHo8XRQ22r57diZro6OpwBuBefrhubCY574=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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