Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '2b1ad3750dd79aec5cf94314b376ea2ddc63ce67a17bfa6027c9675351136252' 
  AND token = 'G6zuu7r0Y+H5Tt04O6LWNiiWuALFjtEqZyBnOe96Xp8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}