Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd663cc3dc87c3f856edbdd9d56629a871910fc60917e6788305940013c2398eb' 
  AND token = 'vxu9DFstx0lziVMw4WTgGlIA0FPyVFz650RFRYQuNDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00088

JSON explain

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