Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '281e2bc28ff0f831c4d6073429b86d9d6f8ce2ac2157ad893ac0d4a5d400f561' 
  AND token = 'RqVkKT5WA98RekGHffnlKbZgI2kVG7nZHbzZE7xGwio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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