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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '41f1d3ca1a5e36ef08c134c0d6c5260cc98fc773f344250d5e0a8fe90e40cbf1' 
  AND token = 'KOdpz60E8PmbPOx0RogWDMMGsIGgCMBm+3vJ+iQqDcU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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