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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd543e7b7997d45d882dc8f1ac4e255dd9ae317247993a3b756a7027398b839f8' 
  AND token = 'qIBTi/kKUfonwzcINy5aRi2iKm/1y7lASZIPDKq2s6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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