Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6452a2e0bf93149b198b0bb61469bbe997f050b1ef17c32fb202a3b8094386a8' 
  AND token = 'hPcBh6RmONyVhmSL443WAvy1S5JQ/clnnydxj/RPWtY=' 
  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"
    }
  }
}