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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fd63f7ffaadcb05954fcbe14c0bf0ab3cafc83f8ed4d8f551584c53482eb570e' 
  AND token = 'xVt6TJpKJetWA32T4mHKZvHHtLNwWdPrUpuXxObuHow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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