Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'bceab34a588565a99e3c13d4a0af2479b021813e827b5e83e5dc6bca84e661b5' 
  AND token = 'jvdR+VqViH8vvdV5u66k/2dVEbsBEn7e8qcO4FtvTFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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