Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '828f34012d2765ba305a978d157c0b189128abd3c411a972058513a8b53be2d9' 
  AND token = 'Tj0tlkRjt7Y+/71zNQDHgNhryBfeLCQuf5xIWu18j98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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