Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0789dc942309bcb2ec7d7c52aa3a74409951c1764a13523cf3de7a9299211f4d' 
  AND token = 'YN2Glt2kOPUfQ0v6iXpUs3VS/u4ndCOSu2qkhPjz3jo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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