Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a84250496ba7b42bf1fa493058041380e8b4b977fcd48b87630aefc3f08e14d5' 
  AND token = 'CdS9my5cDbsXa4PLKiW9W8+5qK8TGde0ZMvJLuvQChE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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