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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '132ab43efd4c8515b396ea45284b55a6c793917dad83d414be12163ec546f483' 
  AND token = 'Vcl70xQS1X0oRccDZc7c1XrSJ4+D3Foez4L8n4v0hYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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