Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b9dc6aba41e1c608f6e7d0f0fa3e9538b48b2a76c64025a9eef213580612566' 
  AND token = 'CPTSfs24efILFHwsBhg5YvnSU2guO6GatkHgR6ffKqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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