Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbbe8084dde9a714db190bb5313bd480e131158619a8ba63119219527b0836cb' 
  AND token = 'J1xLJh4jMNqUO+6mFhTQyXSmIGAtgv56n+Tx4opYj0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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