Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '910c58d63577afb5e5d1dd95a328675a49f1d008a2dc87cdeeb2c9a229b95917' 
  AND token = 'kLSA6x1SaqXyxW3yrJOm+CanszKxP8LxZYcnd0I8ZAU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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