Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61f40942765e40753954b6ef48415fa583e6c46e085e3723bd29f682aaeb4cc1' 
  AND token = 'i/6l8LEhAp7kUzKkBr5RmeFOy1MViIy9zJvjXzZDRkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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