Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '731c4df85aaa2fbaf2c9b7489fcc8e1fb1c6bcb346736bea7b9c4bc133919b17' 
  AND token = 'osUtY6wjTTdDNWleB5p1RP3LpVUu5a0C02/F6Q3n0lw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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