Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e0fb9a31938d051de5f45fc6b975831e42da1bbdac7d29e68446ae07b4f67559' 
  AND token = 'NybMbn0kStI/f2jdjs8Snv2UOub+dWHsn3Cj2mOHkv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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