Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16ca9b4507c15c8ee130c851c4db63f5ebb71ec4701c9c8cdc25f44b86f627da' 
  AND token = 'zYBR0pEXeIWRu6UNyHIemN2hzk5cwSngjGf84tUToEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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