Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '413c923135758da1d8a1953147b75f1fdb97dbd616423271483ed29a3d65fdc8' 
  AND token = 'uymMe2qNVMkCg2eHgBQuNjWqoS9FurN/2EmzxbajakQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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