Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb01f1dabc32ffc26baea9285800bb6e4404859560ab6e6ef883ce89f1a5e6dc' 
  AND token = 'M/VpvLySZODijvv/Qjwdgt5EVAIMz8D4/UYM8bJ1bj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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