Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbcf980f8838183149d97f5f608ec5e931f7e8a1f96e212f34d7d9a0776b107e' 
  AND token = 'ONOpjUSim8RVIqdEhYNsxya9igjZ6TLrxJlodC757QA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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