Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'fcd6b298c41c4541bc70d1890b09acbeda4c01b4f79941ffbf98b9e174fc629c' 
  AND token = 'w+Z3ci77PRmV3QXDOO5+9/0Sse6nDqA2CgYHrPUW3t4=' 
  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"
    }
  }
}