Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '18259d3609bee2894f4dc6a064789c0179baae1c0f5e37895f6b9499d8a4d6e4' 
  AND token = 'itNTxzG6/mrHLC5wc4fuSYy46XbtDcUSnBA26/91P9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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