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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa292065efe6a7ed9579bebe4c53011f45ba5e5a885a573afb74215265503fb0' 
  AND token = '2gspFRiyp78TumZ4vv9hi/GxDzaiLDE8iVKU1E/QD/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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