Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70e12ae117f6aca2fd0995954ed8a2f595a4d30f8ffb7d5d77f5db3be04a244f' 
  AND token = '/jkPR0hr93c5mmJHMcrZ402MFiA4vA6cZ+21mHzVdYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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