Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae8200b492f71a534561e4b37d25d8db603b314ac5fbb895f4cfb727f7cbf0fd' 
  AND token = 'WDXblC/BZ3fQvm6bunqQbbVkpZ/i2wJYA4icd9E0SA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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