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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '9e313fd23d11b8e8c5ff8a984d797e3058bb720c0b0aa25bc56aa59c8f82f4c4' 
  AND token = '34r2YLj4SAiraTJkdySjd5lj2TOT29rIKlpLFTG0Zlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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