Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54fbe8609af9e1dc4778b3867a785c0cfff32b1366350f030aff9b2f6f8c5cfc' 
  AND token = 'rGfW/f4FK9ae7cH2cG/QHGWy5D2emrfZ0kPxGRt2/r0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}