Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd770b644c21bf5cc85cc32bf4dd033542c74493c94530a600f6116f0033d3b64' 
  AND token = 'bo4iwhADFRSDmPMS9wDrdqS/dU3Dk0ypLqZHzM3AK6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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