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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07c33e2246ec6e2f347c45890360c75b856f857a8962c0a4bb2207bd43bc7ce1' 
  AND token = 'P5riwL+E3wQxEl/GjGL/pV5cTIws0T7N+BTLIl7oyyY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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