Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c726e60b9d14a42d377b583cc2ef0ff31e88325108a87e49d4763b3e4f3e761b' 
  AND token = '05lA7gdWvzN8OxRGcR/C09V7sPEnQN4IX/Ir6G0aMtk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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