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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '3c07e81dc90a961f9bc5eeba1bd9f63e99b8be44386aef27bb1945a7be47530e' 
  AND token = 'TC488UM97wiXfZzK29+/ttVDp/Ake+mnf2O+KY6CKHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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