Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '999fba7c15d240ec9191f4c08f0e2e63d4f15116e2406df2a916dd80ed46690a' 
  AND token = '0GpmWfXA0D8WjYK788KQbi8dB1rm5qNGTPRJkKflS3w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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