Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b5af00fad61f999d99ed20dfe8ffa2e859c95655e5d72e39e2b1dbb11a5f2fb' 
  AND token = 'E7+Po4vr6MIhOIp3kAslx/Ce/D83dUL/SpzYeiE8oAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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