Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b1c061d58e29a66afa4c42bd3f8ed287863dc8c4446dfafda381275b513e635' 
  AND token = '8YAs1Recl2nzJxToARDlXO8Q91TXh1dbp+53CF7N+V8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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