Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b32a5e190455d22bf79251486c422896d0cd99485e019c048521a7afef15dde8' 
  AND token = 'Me69XAGaGAx81NTn09l85172Xc5EyMqgCT4/wYdJC34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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