Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcfc6d876eafbe8dbc7ddb86c6bc285af033ca79a24776118ae9c6c8b6b8283e' 
  AND token = 'vwQ4/8+Hgi2i84q23xswXVA5R9xlvNLJuEaO6TC0T6s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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