Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ea5b0c4594e2457f1ee7a99789686473866d273f255949538d96ea6c958e723' 
  AND token = 'BHVOQaIFHf+t2OP+40LNPE0/SVAfX1VtJat3NidbEGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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