Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a65abe5edb221142fa589b5670e90f0fb1bcd99363f8ed6e57da3d0d54a1d116' 
  AND token = 'TrK4em6+Pzc57LxgMO5UijSKmA4qCWoBKdUZ3tornDg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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