Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13833087d10713c5a7aa431a375eed3c2faf3d2461da62972859dbce235284e8' 
  AND token = 'Ot00LdROTfyGxFYo4Xkr1IfhDw4QlCkvIhOXFDOiFec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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