Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d659a33d57effd5447216b485112ce02b8a21cfeff8d4ed228cdf2f8af130e7' 
  AND token = '14qAr3Y+yxbu39kc2bIMlKBhwhGmyANxEu9bLHgeKZs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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