Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '87a2fb9ce0addeeb487d6ecfa79cbf4c12845c5d383f427d407a700bc2cf3b3f' 
  AND token = 'c9YUOPxcqoyxO/U6zjdtS++Z0X4tmjlb0vNMxwWjrfA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}