Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '885892da0154094f2153f5f7660a9150652d7d52dd53dc4187d5bb188f8084f1' 
  AND token = '8BEvN1n/FrmqswfRWUUHksqZyaD/8lO6ZQxj524os+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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