Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9431020fb8d7877f1747c084ec7274fdc30b2022d6c12a687b14db4457bc9ebb' 
  AND token = 'y/lJ65tPiYKMyKXUP796lhrMeFrWAEsJERELcxdd4rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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