Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '3a69392be093f3d58ed4d79fef658e72545cd06d5c9a30fa62aaab6e40b57ab1' 
  AND token = 'TGQxg1R+FrlrE/t5e0sIRcdmjGwQfKVkl4oMGx/7bgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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