Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c73c054f2778133f468909783cf16e0c59eaa28a25bb6162081f0c5f239c607' 
  AND token = 'pZ8AeBzNBxcBbilllKC2pgmIBO7cd9JdylyEw9oIViI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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