Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4cf0761d243c94bd8c8ffd422b63412037c9fcc6f33d275fca221d50ed1da327' 
  AND token = 'ihWEPufa4RLL/OuldZl2SQdsKqZN4DlfOaQ1vg1JriY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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