Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e98405d70965608f3cbff79c3f18ec76ef83064d42ff78200011bc21929e4701' 
  AND token = '1uEM9Hsf9kcjJJgO7FvSu0d8K4zdakLnL1fKza4rt+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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