Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd30c54a15a63b1148591f583adc6ff789b22cbad36fce6cc07b8ba58d51daaf2' 
  AND token = '0FPwdJ+789YrjGy0IJxy64o9R+AX8XuMyq/gMcEEvf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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