Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '633d02bd40e366738915d877826366196976a3fca09435c77cd98baf1a439878' 
  AND token = 'qLIlXcQD1RXl8Vegx1wetDe5YFDiTp/zkIojHx9GjTA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}