Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '933abf63005c3124f7725cbc2b499bbc092dacefb3aeb40f014b03f5152ce085' 
  AND token = '6g83WLQnn+pUeQxSk/VV0N+jSaC+14bXjUQGnK1fjJU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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