Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'fca8cdb82b8030609022751c854dd1404553ea3c5992536c549c01b0ddb486c0' 
  AND token = 'xisSwdLT1Z8SaiTPi5z3CeGYzdshflO4EbewxHoXB2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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