Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '92e51b324072b64032280ba411b80319e98facf02c83733864dd97fde14daa53' 
  AND token = '2U1S67Ncn+mxDCn54nExKbCLeEgvu1kKHToZlDtxHBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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