Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c00872c18b0cebea8452956c9a72a6137c665660512f595bda46fe7bf57bec75' 
  AND token = 'MulSSZLSOJ+2t7BKmgvdmWikxmhXYUPpl12u2RHDxwE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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