SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfce2d07856f86a9b3ac1529ff575cc4f2b078d598cf77230f8c73b1cb69cc4d' 
  AND token = 'qE0kuVn0qRj/gapj+JN3vLAQ2IM5c72lEKisZGTBsJc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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