Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a7259f2969a23a84d715cae66568d363079e8e96a820d091a97c9c728955690' 
  AND token = 'dt8lYlA8M5WvU8B25151m6oeRhaQSVtx96C9Gz3nEm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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