Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '34c102fe70554e13ae65603a2050020fa42195e3b28495b8e86a38e063abf530' 
  AND token = 'TU2c9neqPVA1s1BUi+ndxJ4mhGsVW3+TVF7BiPHQhzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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