Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb20a608b475b3b8371a188067a17ccf22e71183c9bf5c62dd6b9bdda2734e3d' 
  AND token = 'FL/LFrtE8nrlK6yUrkVwEyWB5K5UDifS+RbZOemWwts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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