Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a536efa76648a4045ee532c755da81b3d1b8335c5f496e3317752f616fac7897' 
  AND token = 'pI/xv3+4wk/E3oW60e5u4rD8zTb3Iv++aNYRjU0n7/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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