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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '54afd05e77b746ae0227810843519633ce8f4b88c8101e3af217cbca93ef9d8d' 
  AND token = 'XEKA5pxlwnZfnlyTFwyr7m+lq7iEBrX3Z4MlyqvsFTI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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