Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26be28afbbfc2a69473a8ff01784164e47f2699fb681958657bbc6902346bf4d' 
  AND token = 'SF6UtI4r5chUevA0SN91y+5A59YUAY8BNwII54GPGJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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