Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd03969c063c6851b8a63e2b57123104544dbf73e5184d1ee07fc924caa4f198a' 
  AND token = '4m6XVRE4l2qL8zTsKGLdpS8joyUslJB/m3R01kBYdO8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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