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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'f932e80a57a0e9fae103cf667c6664a95d89021976a276e6dffcf1cff7c049b9' 
  AND token = 'WgfTMsHKjFt8yWMqIvv7k1o4pFm9PSZJ9OO4FzxPA1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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