Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '052fd504542c7c3b308a9192da6ca1661a0e142de768ab6410e5736582a1e99a' 
  AND token = '00KF8zU02zL/jou4u0OtgfBSPMUWF+3i5F2k2xew/JM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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