Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f85818fc6a1768ce056d5b94249510e53325bc6c3a8bd01f916f486931ef2b96' 
  AND token = 'IALSNQBtvI3SUHFDsJLB0SWdcTNttU3isGpfhypwadE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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