Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7aba91f51c8c21a9795d7b259ddf84e6e7fc900589cdc14566d5c0e5e5eebf7b' 
  AND token = 'T12/pZhBWAPNynBQ/5gRINrNa/zvc+ufYMb8XeQ8M4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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