Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8561aec3757030884b8ad2f1159c71c6d3daa591140731f13b7ae1b905a5df8c' 
  AND token = '9Z8qVbJ70gsPfmYzcidLeuGBoQYin6UF+LoxblPrKbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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