Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce8970b126d96f275e0d07f6b4f035a1a20b52606dd548adfe8afc78dea9decc' 
  AND token = 'H7xQaXBD+fpRRvATk98ReVMASU0uAZNQV+9s6AbNJYw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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