Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7db533ae5305397dae6d29e6e1645a2f2d563d0d25fceecc09060edb8d46aad' 
  AND token = 'W2lrRnxgekT+N8o/YsPWPWeJ/zI2tCm4kRXTbfH0m/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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