Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7357d79a5e6d483ac759fc693d51cf1372f398e5b7145c9182fe54f2b8fe6587' 
  AND token = 'z2OZHc/jT4sUmebUa9B+iMWl1m77HyCE59AndOawF1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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