Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'cfc0cb79d4c7509fb0a1fc163668a8ea9566097f2dbc8410924f0bfde203cd8a' 
  AND token = '19nBD9s7S/a8EQ70saK3wJa4bfJMB+n+1yGeiNJC3CY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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